Across
- 4. Solid at room temp.
- 7. Used in Fertilizers
- 9. Has highest melting point of light metals
Down
- 1. _ & Chloride make salt
- 2. Derived from the word Helios
- 3. 12 protons, Neutrons & Electrons
- 5. A primary component on gas planets
- 6. Used in fiberglass
- 8. Element symbol is F